挑大旗

tiǎodàqí ㄊㄧㄠˇ ㄉㄚˋ ㄑㄧˊ

    • to lead a movement by raising a rallying slogan or cause

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Saying俗语俗語

Idiom惯用语 · Widely known

Literally
raise the big banner
Meaning
To lead a movement by raising a slogan or a cause that rallies people.

Sources